A. It’s correct. After all negotiations failed in 1946, it was impossible to achieve a dismantling of weapons and to guarantee the prohibition to other countries to manufacture more weapons, in special to the USSR, in merit to it, President Truman authorised the development of thermonuclear weapons and hydrogen bombs. By 1953, the US started building effective long-range missils and submarines.
B. It’s correct. On August 24th, 1954 President Eisenhower signed into law the Communist Control Act (CCA). The title amended with this is the 50 USC: War and National Defense. Its complete title is: “An Act to outlaw the Communist Party, to prohibit members of Communist organizations from serving in certain representative capacities, and for other purposes”. This act has never been repealed since its creation by the US Supreme Court.
C. It’s correct. Since 1946, President Truman institued a Program of Federal Employees’ Loyalty. That produced little impact on the lives of most of the officials civilians, but several hundred of them were dismissed, some in anfair way. In 1947 the investigations fell on the cinematographic industry. Some writers were forced to appear on contempt charges and the, they were sent to jail. The most determined fighter against communism was the senator McCarthy. He acquired power in 1952 and started his own crusade looking for cases of treason in the officials levels of the government.
D. It’s not correct. Since 1945, President Truman favored a liberal immigration policy toward displaced persons from european war without distinction. By 1959 Congress amendments to the Displaced Person Act authorized a total of 400,744 visas for displaced persons and removed any geographical or chronological limits for inmigrants. After that, the United Nations Acts of Immigration were always respected.